(cy1cd020)
DIMM 1
DIMM 2
DIMM 3
DIMM 4
Microprocessor
Video
Serial (COM1)
NMI button
Ethernet connector 2/
USB connectors 3&4
Ethernet connector 1/
USB connectors 1&2
Figure 4. External connectors on the system board
System-board switches and jumpers
The following illustration shows the location and description of the switches, jumpers, and buttons.
Important:
1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all
power cords and external cables. Review the information in “Safety” on page v, “Installation guidelines”
on page 33, and “Turning off the server” on page 15.
2. Any system-board switch or jumper block that is not shown in the illustrations in this document are
reserved.
3. If there is a clear protective sticker on the top of the switch blocks, you must remove and discard it to
access the switches.
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Lenovo System x3250 M4 Installation and Service Guide
Содержание System x3250 M4
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